Search This Blog

Load Testing ASP.NET Sites with JMeter

Following my previous post about using JMeter to test MOSS, I tried to figure out what are the bare minimum requirements of using JMeter against a plain ASP.NET website.

I wrote a very simple ASP.NET web application with just a button, a text fields and a static label. This application displays the content of a text file in the static label when it loads and write content of the text field back to the file when the button is clicked.

I found all I need to do in order to script this using JMeter is to extract __VIEWSTATE and __EVENTVALIDATION fields then send them back in the update request. My JMeter test plain looks like this:

Comments

You can click button with WebDriver Sampler, which is Selenium based plugin for Jmeter. But you should note that Selenium is not for load testing and it's not recommended to use WebDriver sampler with more than 10 users.

How can I create JMeter scenario for testing ASP.NET pages - default page is login page with "Username" and "Password" fields (for entering username/password values) and [Login] button.These field are named in web form like "tbUsername", "tbPassword" and "btLogin".Firstly I need observe value "__VIEWSTATE" (from default page before login process) (is possible to use previous advance in this article), and values "__EVENTTARGET" and "__EVENTARGUMENT".And then?Have somebody some tips (or sample jmx-file)?

Post a Comment

Popular posts from this blog

I have used JMeter for load testing few non-ASP.NET web sites before, however I could not get it to work with ASP.NET web sites. This is mainly due to ASP.NET ViewState and event validations, which stops a recorded JMeter script from being played back.Recently I worked on a MOSS project and we were looking for tools to perform load testing on the server. Many people said the load testing tool in Microsoft Team System for Testers works well with MOSS. However, it is quite expensive so I decided to give JMeter another go. After several hours of hacking, I actually got it to work and here’s how I did it.My test page is the pretty standard MOSS edit document property screen with few extra text fields added and the goal here is to use a JMeter script to change the document properties. Once I have a working script, I can configure JMeter to fire hundreds of instances of this script simultaneously to simulate the user workload.As shown in the screenshot below, the test plan contains two HTTP…

As I have mentioned in the last tutorial, you use edited fields in COBOL to format data fields into human-readable display strings. Let’s start with a numeric field:01 NUMERIC-FIELD PIC 999999V99.and some COBOL code that set and display the field value:MOVE 1234.5 TO NUMERIC-FIELD.
DISPLAY NUMERIC-FIELD: ' NUMERIC-FIELD.As we’ve demonstrated in the previous tutorial, unused digits are padded with ugly zeros:NUMERIC-FIELD: 001234.50Let me put my C# programmer hat on again (apologies to Java, ruby, python, C/C++, assembly and many other programmers who don’t like C#), when we have to format a variable for display, we often use the string.Format method with a formatting string containing special formatting characters, which is “0,0.00” in the following example:// returns 1,234.50
string.Format("{0:0,0.00}", 1234.5)Now let’s come back to COBOL, an edited field is basically a normal COBOL data field with a formatting string in the picture clause instead of the “A”, “X” or “9”…